Chow mein noodles are usually made with eggs, which is why I haven't had it in so long. I always used to love it. Eggless Yakisoba noodles can make a good chow mein so it wouldn't be hard to offer one with these.
The issue with the allergens is "dedicated cookware". Sometimes these places cook their food in pans and on grills they just cooked meat on. This happens at most places that offer vegan options. Personally, I think this is ethically negliglable. If you expect a restaurant to cook vegan options on "dedicated" cookware, you may as well give up on eating out. Of course you can aske that they clean the cookware for you, but personally, I feel this reinforces the stereotype of the fussy vegan, and puts a burden on fast food workers already stressed out from a hectic job. The bad PR
adversely affects animals more than the tiny traces of animal ingredients that might "contaminate" an otherwise vegan option. Of course, everybody's got to make their own ethical decision about this.
My main problem is with Vegan Outreach, PETA, etc. who're kind of misinforming people about their "victory" in Panda Express offering vegan options, and maybe other fast food places as well.